Device for converting motion.



G. ANDERSON.

DEVICE FOR CONVERTING MOTION. APPLICATION FILED JAN.3, 191s.

1,203,568. Patented Nov. 7, 1916. I

GUSTAF ANDERSON, 0F LYNN, MASSACHUSETTS.

DEVICE FOR CONVERTING MOTION.

Specification of Letters Patent.

Patented Nov. '7, 1916.

Application filed January 3, 1916. Serial No. 69,735

To all whom it may concern:

Be it known that I, Gos'mr ANDERSON, a citizen of the United States, and resident of Lynn, county of Essex, Commonwealth of Massachusetts, have invented an Improvement in Devices for Converting Motion, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts in each'of the several views.

This invention relates to a device for converting reciprocating motion into the rotary motion or vice versa, and while having other and more general usesis well adapted for converting the reciprocating movement of a prime motor such as an internal combustion engine or steam engineinto the rotary shaft movement for the transmission of the power thereof as required.

A prime object of the invention is to providea device of this character wherein the amount of power lost by friction and inertia of the parts is reduced to a minimum and wherein the transmission of power is most effectively and evenly imparted to the driven shaft, resulting in largely increased efficiency over existing types of transmission for converting motion, known to me.

To this end the invention consists in providing a special form of transmitting memher which may be a cam, on a rotary shaft, such cam having raised portions or lobes alternating with inset or recessed portions,

and for cooperation therewith a series of heads connected together by links and 'fengaged with the reciprocating members, each of said heads bearing a cam engaging portion preferably equipped with a roller.

The invention will be better understood from the following detailed description taken in connection with drawings and will be thereafter in the appended claims.

Referring to the drawings: Figure 1 shows in elevation a device constructed in accordance with my invention, the inclosing housing being shown in section, and the series of engine cylinders being broken away; and Fig. 2 is an edge/view of the operating mechanism removed and with the piston rods of the engine broken away.

The invention is herein shown as embodied in a four cylinder engine though it is to be understood that this is merely illustrative and that a'nreater or less number of pointed out the pins 16. It will the accompanying cylinders may be employed as desired, or the invention used for other purposes than engine transmission. The four cylinders of the engine indicated at 1, 2, 3, 4 are mounted in quadrantal radial relation on a suitable housing frame 5, which may also be equipped with bearings (not shown) for a shaft 6 to be driven by the engine. On this shaft is fixed a special form of peripheral cam having oppositelv extending lobes 7, 8, with intermediate inset or recessed portions 9, 10. The four piston rods extending in from the respective cylinders are indicated at 11, 12, 13, 14, respectively. Each of these rods has at its inner end a yoke head 15 in which is journaled a pin 16. These several pins are engaged by sleeve bearing ends 17 on a series of link bars 18, 19, 20, 21 which thus constitute a form of parallel motion mechanism whereby as either or both of a pair of the opposite heads 15 are pressed inward, the other opposite pair Will be forced outward, and as any one or both of an opposite pair of said heads are moved outward, the other pair are likewise drawn inward. The heads 15 are also equipped with cam engaging members,'these preferably consisting in rolls 22 journaled at the lower ends of be understood that the 10 are so proportioned cam portions 7, 8, 9,

that the rolls 22 thus operated by the heads described, will follow they 15 connected as contour of the cam. Thus as power impulse is imparted to either or both of the opposite rods, 6. 9., the rods 11, 13, the cam and hence the shaft 6 will be caused to rotate from the position shown, the other pair of rods 12, 14 being at the same time gradually moved out of the inset or'socket portions 9, 10 of the cam until finally the rolls connected with these latter rods are engaged with the tops of the lobes 7, 8, whereupon the rods 12, 14 commence to move inward, thus continuing the forward movement of the driven cam and shaft. Since all four of the heads 15 are connected together by the parallel link motion described, it will be understood that the mechanism is operated whether the power impulse be only operating to pull on the several rods 11, 12. 13, 14. or to push only onsaid rods, or to both pull and push, 2'. e.

exert power in both directions of reciprocation. Likewise it will be understood that the device is equallyoperative and useful to transmit power in the reverse direction, a. e., with the shaft 6 as the source of power and thereon with a a power delivery being to one or more of the radial rods 11, 12, 13, 14

I am aware that the invention may be em bodied in other specific forms without departing from the essential attributes thereof, and I therefore desire the present embodiment to be considered as illustrative and not restrictive, reference being had to the appended claims, rather than to the foregoing description to indicate the scope of the in vention.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A device for converting motion consisting in a rotary shaft having a cam fixed pair of oppositely disposed raised lobes alternating with oppositely disposed inset portions, a plurality of reciproeating members extending substantially at right angles to each other and each having an element engageable with said cam, and a pivoted link bar connection between the inner ends of said reciprocating members for the purpose stated.' I I 2. A device for converting motion, comprising a shaft having a cam fixed thereon formed with oppositely disposed raised lobes alternating with oppositely disposed inset portions, two pairs of reciprocating members mounted to cooperate with said cam, the members of each pair being oppositely disposed and the two pairs being at right angles to each other, and a parallel link-bar connection between the inner ends of said members, the inner ends of said members having each a roller continuously engageable with said cam for the purpose stated.

3. A device for converting motion, comprising a shaft having fixed thereon a cam formed with oppositely disposed lobes and with inset portions between said lobes, two pairs of piston rods mounted to cooperate with said cam, the rods of each pair being opposite each other and the two pairs at right angles to each other, parallel link bar connections pivotally connecting the inner ends of said reciprocating members, each of said reciprocating members having a head equipped with a depending roll continuously engageable with the periphery of said cam.

In testimony whereof, I have signed new name to this specification.

GUSTAF ANDERSQN 

